Collapsible softbox for photography lighting

ABSTRACT

A collapsible softbox for use with a photographic flash. The softbox includes a collapsible body made of connected, moveable first and second side panels. The body includes a distal opening and a proximal opening. The softbox also includes a front panel which is detachably engageable to the distal end of the body.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to improvements in devices designed tocreate soft, even lighting conditions for photographic purposes bydirecting light through a diffusing material.

2. Description of the Related Art

Photographers commonly use softboxes with large AC powered studio flashunits to create soft, even light by directing the light from the flashunits through a diffusing material. Studio softboxes are generally madeof a black cloth lined with a reflective surface on the inside thereof.The cloth is then stretched or draped over either four or eight rodsattached to a connecting ring to create a rectangular oroctagonal-shaped box, respectively.

With the advent and increasing popularity of reliable, portable, batterypowered flash units; the need for small, lightweight, portable lightcontrol devices has increased. The currently available portablesoftboxes are rectangular in shape and are either rigid-walled,inflatable, or use the same type of connecting rod and ring system asthe large studio models. The rigid-walled and rod-based designs can becumbersome, are not easily stowed for transport, and may be easily bentor deformed. In addition, the inflatable designs are subject topuncture. Furthermore, the linear shape of the softbox produces adistracting matching catchlight in the subject's eyes. Accordingly,there exists a need to provide a softbox with improved portability anddurability that produces a more desirable catchlight in the subject'seyes.

The present invention seeks to alleviate one or more of these problemsby providing a softbox that eliminates the need for inflexible rigidwalls or rods, without requiring inflation, and simultaneously producinga curved catchlight.

SUMMARY OF THE INVENTION

The present invention in one preferred embodiment is drawn to acollapsible softbox for use with a portable light source, such as a shoemount flash, to create a softened, more even light for photographicpurposes. In one preferred embodiment, the softbox is generallyfrusto-conical and has an opening at both ends. The larger opening iscovered with a removable, light diffusing front panel and the smalleropening is attached to the flash. The softbox has side panels that maycollapse toward each other when the front panel is removed, allowing thesoftbox to be easily stored and transported.

In another preferred embodiment, the present invention is drawn to acollapsible softbox for use with a photographic flash. The softboxincludes a body having a first side panel and a second side panel. Thefirst and second side panels are connected together, with the first andsecond side panels being moveable from a collapsed position wherein thefirst and second side panels are substantially flat to an expandedposition wherein the first and second side panels are at least in partcurved. The body has a distal opening and a proximal opening in theexpanded position, the distal opening having a curved perimeter in theexpanded position. The softbox further includes a front panel having acurved perimeter, the front panel being detachably engageable with theperimeter of the distal opening of the body. The front panel, with thecurved perimeter of the front panel engaged to a majority of theperimeter of the distal opening, maintains the body in the expandedposition.

In a further preferred embodiment, the present invention is drawn to acollapsible softbox for use with a photographic flash, the softboxincluding a body having opposed hinges connecting first and secondportions. The first and second portions are moveable from a collapsedposition wherein the first and second portions are substantially flat toan expanded position wherein the first and second portions are at leastin part curved. The body has a distal opening and a proximal opening inthe expanded position, the distal opening having a curved perimeter inthe expanded position. The softbox further includes a front panel havinga curved perimeter, the front panel being detachably engageable with theperimeter of the distal opening of the body. The front panel whenengaged to a majority of the perimeter of the distal opening maintainsthe body in the expanded position.

In yet another preferred embodiment, the present invention includes amethod for softening the flash from a camera, the method includingexpanding a body of a softbox from a collapsed position wherein the bodyis substantially flat to an expanded position wherein the body forms agenerally frusto-conical shape with an open distal end and an openproximal end that is smaller than the distal end; removeably engaging afront panel to the distal end so that once the front panel is attachedto the body, the body is maintained in the expanded position; andremoveably engaging the proximal end of the body to a structure housingthe flash.

In another preferred embodiment, the front panel may be permanentlyattached and the softbox may include an internal conical helix, allowingthe front and back to be collapsed toward each other for storage andtransportation.

The front panel of the softbox may be round or elliptical to create amore appealing rounded catchlight.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory onlyand are not restrictive of the invention, as claimed.

The accompanying drawings, which are incorporated in and constitute apart of this specification, illustrate several embodiments of theinvention and together with the description, serve to explain theprinciples of the invention.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view of a softbox in accordance with a preferredembodiment of the present invention shown detachably engaged with aphotographic flash housing.

FIG. 2 is a perspective view of a body the softbox of FIG. 1 shown in acollapsed position.

FIG. 3 is a perspective view of a front panel of the softbox of FIG. 1.

FIG. 4 is a perspective view of the softbox of FIG. 1 showing the frontpanel being removed from the body.

FIG. 5 is a perspective view of the flash housing of FIG. 1 having ahook and loop fastener strap detachably engaged thereto.

FIG. 6 is a front elevation view of the flash housing and hook and loopfastener strap of FIG. 5 shown engaged to one another.

FIG. 7 is a rear perspective view of the softbox and flash housing ofFIG. 1.

FIG. 8 is a perspective view of a softbox in accordance with anotherpreferred embodiment of the present invention shown detachably engagedwith the photographic flash housing.

FIG. 9 is a rear perspective view of the softbox and flash housing ofFIG. 8.

DETAILED DESCRIPTION OF THE DRAWINGS

Reference will now be made in detail to the present preferredembodiments of the invention, examples of which are illustrated in theaccompanying drawings.

FIGS. 1 to 7 show a preferred embodiment of a collapsible softbox 100detachably engageable to a flash housing 200. In this preferredembodiment, softbox 100 includes a body 102 and a front panel 112.Softbox 100 is preferably configured to be detachably attached to alight source, such as flash housing 200, to soften the light from aphotographic flash 202. The preferred elements of softbox 100 and theirinterrelationship are described below.

Referring to FIGS. 1, 2, 4, and 7, body 102 of softbox 100 includes afirst side panel 104, a second side panel 106, a distal opening 108, anda proximal opening 110. First and second side panels 104 and 106 arepreferably connected to each other to form a hinge 124 at the top ofbody 102 and a hinge 126 at the bottom of body 102. Hinges 124 and 126may be a living hinge or a sewn seam. First and second side panels 104and 106 may connected in other ways without departing from the scope ofthe present invention. First and second side panels 104 and 106 aremoveable from a collapsed position, as shown in FIG. 2, to an expandedposition, as shown in FIGS. 1, 4, and 7. In the collapsed position, sidepanels 104, 106 are generally flat to minimize the size of softbox 100to facilitate storage. In the expanded position, first side panel 104and second side panel 106 are preferably at least in part curved, anddistal opening 108 preferably has a curved perimeter. In the preferredembodiment, softbox 100 forms a conical shape in the expanded position.

First and second side panels 104 and 106 are preferably constructed ofthree layers; an inner layer, a middle layer, and an outer layer.Preferably, the middle layer is more rigid than the inner and outerlayers. The middle layer is preferably rigid enough to hold its shape,but flexible enough to allow it to be bent or folded and still resumeits original form. The inner layer may include an interior surface 122,shown in FIG. 2. Preferably, interior surface 122 is reflective.

As shown in FIGS. 1, 3, and 4, softbox 100 includes a front panel 112.Front panel 112 has a curved perimeter that preferably matches thecurved perimeter of distal opening 108. Preferably, the perimeters offront panel 112 and distal opening 108 are round and include cooperativehook and loop fasteners 114 and 116, respectively. The cooperativeengagement of hook and loop fasteners 114 and 116 forms a ring. Thering, when connected by the cooperative engagement of hook and loopfasteners 114 and 116 to the curved perimeter of distal opening 108,provides support to maintain the expanded position of body 102. Thewidth of fastener 116 is preferably wider than fastener 114 tofacilitate easier installation of front panel 112. Front panel 112 ispreferably made of a flexible, translucent fabric or other materialsuitable for the intended purpose.

Front panel 112 is preferably flexible, and therefore need not itselfprovide a positive, rigid structural support to maintain the expandedposition of softbox 100. When front panel 112 is attached atdiametrically opposite points of distal opening 108, the portion offront panel 112 connecting the opposite points prevents separation ofside panels 104, 106 beyond the diameter of front panel 112. Theattaching of front panel 112 at diametrically opposite points along theperimeter of distal opening 108 shapes the distal opening into thecircular shape of front panel 112 and effectively distributes the forcerequired to maintain the expanded position of body 102 along theperimeter of distal opening 108. This effect is most noticeable in theembodiment of FIG. 1 where front panel 112 is engaged by fasteners 114,116 to the perimeter of distal opening 108 at opposed hinges 124, 126.For example, if an attempt were made to compress softbox 100 while inthe expanded position, the points around the perimeter of front panel112 and distal opening 108, particularly those points perpendicular tothe force of compression, would be the most likely to “bow out.”However, this tendency to “bow out” is countered by the resistance toseparation by the diameter of front panel 112, which is preferably madeof a non-stretchable material, between opposed points along theperimeter of front panel 112, to help maintain the expanded position ofsoftbox 100.

The degree of flexibility of the middle layer of side panels 104, 106also functions to maintain softbox 100 in the expanded position. Sidepanels 104, 106 flex to form a curve when attached to front panel 112 inthe expanded position. The forces of side panels 104, 106 to return to anormal, unflexed state are resisted by front panel 112 secured toperimeter of opening 108.

To effectively maintain softbox 100 in the expanded position, it is notnecessary to have fasteners continuously around the entire perimeter offront panel 112 and distal opening 108. For example only, where thefasteners include a plurality of snaps, the snaps can be evenly spacedabout the perimeter. To maximize the effect of an even distribution offasteners (whether continuous or spaced), a circular shape is preferredat distal opening 108 of body 102, and front panel 112. Other ways offastening front panel 112 to body 102 include the use of a zipper and/ormagnets or other fasteners. Many advantages flow from the arrangement offasteners as discussed above. For example only, no support rods orinflexible support structures are needed to maintain the softbox in theexpanded position, permitting the softbox to be stowed in a compactfashion. Additionally, the set up of the softbox is more quicklyfacilitated by the absence of a complicated assembly of support pieces.

FIG. 5 shows flash housing 200 having a hook and loop fastener strap 204being detachably engaged thereto. FIG. 6 shows fastener strap 204engaged to flash housing 200, and a photographic flash 202 containedtherein.

Referring to FIG. 7, a tab 118 extends from first side panel 104, and anopposed tab 120 extends from second side panel 106. On the interiorsurfaces of tabs 118 and 120 are hook and loop fasteners 206 whichcooperatively engage hook and loop fastener strap 204. The cooperativeengagement of fasteners 204 and 206 permits detachable engagement ofsoftbox 100 with housing 200.

FIGS. 8 and 9 show another preferred embodiment of a collapsible softbox300 detachably engageable to flash housing 200. The structure of softbox300 is similar to that of softbox 100, so unless otherwise noted, thedescription of softbox 100 will be understood to apply to softbox 300 asappropriate. Softbox 300 includes a body 302, a front panel 312, opposedtabs 318 and 320, and an internal conical helix 328. Softbox 300 isdifferent than softbox 100 in that rather than having a removable frontpanel and side panels that collapse toward each other, front panel 312may be permanently attached and body 302 collapses toward front panel312 for easy storage and transport. A further difference is that ratherthan having side panels with a semi-rigid layer, body 302 has aninternal conical helix 328 between layers. Internal conical helix 328resiliently expands body 302 to an expanded position, and allows body302 to be compressed into a collapsed position when in a compressedstate. Internal conical helix 328 may be formed as a metallic or plasticwire. Softbox 300 allows for a faster set up and smaller storage space.

The softbox of the present invention may be made of a variety ofmaterials. For example, the outer layers of the first and second sidepanels and the body, are preferably made of a durable, natural orsynthetic, fabric and are preferably black in color. The inner layers ofthe side panels and the body, are also made of fabric but are preferablywhite or silver in color so as to reflect light. The combination of theinner and outer layers of the side panels and the body are preferableopaque. The middle layer of the side panels are preferably made ofplastic, but may be made of cardboard, or any other suitable material.The front panels are preferably made of a translucent white fabric, butmay come in a variety of colors to create different lighting conditions.

Preferred dimensions are set forth below, although it will beappreciated that those dimensions are representative only, andtherefore, may be varied as suitable for the intended application.Softbox 100 preferably has a maximal length of approximately 24 cm fromdistal opening 108 to the end of tabs 118, 120, and a minimal lengthfrom distal opening 108 to proximal opening 110 of approximately 18.5cm. Distal opening 108 and front panel 112 preferably have a diameter inthe range of approximately 21 to 22.5 cm, while proximal opening 110 ispreferably approximately 8 cm. Fastener 114 is preferably approximately1 cm wide, while fastener 116 is preferably approximately 2 cm wide.Opposing tabs 118 and 120 are preferably approximately 4 to 5 cm long.

Having described preferred components of softbox 100, a preferred methodof use will now be described with reference to FIGS. 1 to 7. To usesoftbox 100 to soften a flash, a user preferably expands body 102 fromthe collapsed position, where body 102 is substantially flat, to theexpanded position, where body 102 forms a generally frusto-conical shapewith open proximal end 110 being smaller than open distal end 108. Theuser then removeably engages front panel 112 to distal opening 108 sothat body 102 is maintained in the expanded position. Finally, the userremoveably engages proximal opening 110 of body 102 to flash housing 200by engaging fasteners 204 and 206. The expanded position of body 102 maybe maintained without using any support rods or other inflexible supportstructure. The method may further include attaching front panel 112 byengaging front panel 112 to distal opening 108 of body 102 via hook andloop fasteners 114 and 116.

A preferred method for use of softbox 300 will now be described withreference to FIGS. 8 and 9. To use softbox 300 to soften a flash, a userpreferably expands body 302 from the collapsed position to the expandedposition, forming a generally frusto-conical shape, by releasing acompressive force maintaining helix 328 in the compressed state. Theuser then attaches a proximal end of body 302 to flash housing 200 byengaging fasteners 204 and 206.

It will be appreciated that the steps described above may be performedin a different order, varied, or some steps omitted entirely withoutdeparting from the scope of the present invention.

The foregoing description is by way of example only, and may be variedconsiderably without departing from the scope of the present invention.For example only, the fastener may be permanently attached to the flashhousing. The front panel may be attached to the body using a zipper,snaps, buttons, magnets, any other means of cooperative engagement, orany combination thereof. Furthermore, the front panel may be attached tothe body through the use of an elastomeric member which is stretched tofit over the distal end of the body, wherein the uniform inward forceproduced by the elastomeric member maintains the expanded position ofthe body. In addition, the softbox may also be attached to the flashhousing any means for cooperative engagement suitable for the intendedpurpose.

The body may be formed to assume a variety of shapes in the expandedposition, for example only, circular, oval, and other similar shapes.The first and second panels may be seamlessly attached if desired, orthe body can be formed as a unitary structure. The front panel may berigid, semi-rigid, plastic, and/or colored. The front panel may be moreopaque in the center in order to block more light directly in front ofthe light source. The fastener may extend completely around theperimeter of the front panel, or only a portion therearound. The softboxmay include means for redirecting the light, for example, by placing anopaque or reflective insert between the light source and the frontpanel. The bottom of the softbox may include a cutout so as to notinterfere with the autofocus or exposure sensors. The softbox mayinclude a case designed for transporting the softbox therein.

The present invention in a preferred form provides the advantages ofincreased portability and durability, while producing a desirably shapedcatchlight.

Other embodiments of the invention will be apparent to those skilled inthe art from consideration of the specification and practice of theinvention disclosed herein. It is intended that the specification andexamples be considered as exemplary only, with a true scope and spiritof the invention being indicated by the following claims.

1. A collapsible softbox for use with a photographic flash, said softboxcomprising: a body having a first side panel and a second side panel,said first and second side panels being connected together, said firstand second side panels being moveable from a collapsed position whereinsaid first and second side panels are substantially flat to an expandedposition wherein said first and second side panels are at least in partcurved, said body having a distal opening and a proximal opening in theexpanded position, said distal opening having a curved perimeter in theexpanded position; and a front panel having a curved perimeter, saidfront panel being detachably engageable with the perimeter of saiddistal opening of said body, said front panel, with the curved perimeterof said front panel engaged to a majority of the perimeter of saiddistal opening, maintaining said body in the expanded position.
 2. Thesoftbox of claim 1, wherein said softbox excludes rods in the expandedposition.
 3. The softbox of claim 1, wherein each of said first andsecond side panels of said body comprises an inner layer, a middle layerand an outer layer, said middle layer being more rigid than said innerand outer layers.
 4. The softbox of claim 1, wherein said body forms agenerally frusto-conical shape in the expanded position.
 5. The softboxof claim 1, wherein said distal opening is larger than said proximalopening.
 6. The softbox of claim 1, wherein said front panel has acircular perimeter.
 7. The softbox of claim 1, wherein the perimeters ofsaid front panel and said distal end of said body include hook and loopfasteners for cooperable engagement with each other.
 8. The softbox ofclaim 1, where said front panel is engageable around the entireperimeter of said distal end of said body.
 9. The soft box of claim 1,wherein said body includes a pair of opposed tabs at said proximal endfor engagement with a housing containing the photographic flash.
 10. Thesoftbox of claim 1, wherein said body has an interior surface that isreflective.
 11. A collapsible softbox for use with a photographic flash,said softbox comprising: a body having opposed hinges connecting firstand second portions, said first and second portions being moveable froma collapsed position wherein said first and second portions aresubstantially flat to an expanded position wherein said first and secondportions are at least in part curved, said body having a distal openingand a proximal opening in the expanded position, said distal openinghaving a curved perimeter in the expanded position; and a front panelhaving a curved perimeter, said front panel being detachably engageablewith the perimeter of said distal opening of said body, said front panelwhen engaged to a majority of the perimeter of said distal openingmaintaining said body in the expanded position.
 12. The softbox of claim11, wherein said hinges are living hinges.
 13. The softbox of claim 11,wherein said hinges are formed by said portions being sewn together. 14.The softbox of claim 11, wherein said softbox excludes rods in theexpanded position.
 15. The softbox of claim 11, wherein each of saidfirst and second portions of said body comprises an inner layer, amiddle layer and an outer layer, said middle layer being more rigid thansaid inner and outer layers.
 16. The softbox of claim 11, wherein saidbody forms a generally frusto-conical shape in the expanded position.17. The softbox of claim 11, wherein said distal opening is larger thansaid proximal opening.
 18. The softbox of claim 11, wherein said frontpanel has a circular perimeter.
 19. The softbox of claim 11, wherein theperimeters of said front panel and said distal end of said body includehook and loop fasteners for cooperable engagement with each other. 20.The softbox of claim 11, where said front panel is engageable around theentire perimeter of said distal end of said body.
 21. The soft box ofclaim 11, wherein said body includes a pair of opposed tabs at saidproximal end for engagement with a housing containing the photographicflash.
 22. The softbox of claim 11, wherein said body has an interiorsurface that is reflective.
 23. A method for softening the flash from acamera, the method comprising: expanding a body of a softbox from acollapsed position wherein the body is substantially flat to an expandedposition wherein the body forms a generally frusto-conical shape with anopen distal end and an open proximal end that is smaller than the distalend; removeably engaging a front panel to the distal end so that oncethe front panel is attached to the body, the body is maintained in theexpanded position; and removeably engaging the proximal end of the bodyto a structure housing the flash.
 24. The method of claim 23, whereinthe expanded position of the body is maintained without using anysupport rods.
 25. The method of claim 23, wherein the attaching of thefront panel includes engaging the front panel to the distal end of thebody via hook and loop fasteners.